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b7eeefe7 MK |
1 | // SPDX-License-Identifier: GPL-2.0-only |
2 | ||
3 | #include "netlink.h" | |
4 | #include "common.h" | |
5 | #include "bitset.h" | |
6 | ||
7 | #define EEE_MODES_COUNT \ | |
8 | (sizeof_field(struct ethtool_eee, supported) * BITS_PER_BYTE) | |
9 | ||
10 | struct eee_req_info { | |
11 | struct ethnl_req_info base; | |
12 | }; | |
13 | ||
14 | struct eee_reply_data { | |
15 | struct ethnl_reply_data base; | |
16 | struct ethtool_eee eee; | |
17 | }; | |
18 | ||
19 | #define EEE_REPDATA(__reply_base) \ | |
20 | container_of(__reply_base, struct eee_reply_data, base) | |
21 | ||
ff419afa | 22 | const struct nla_policy ethnl_eee_get_policy[] = { |
329d9c33 JK |
23 | [ETHTOOL_A_EEE_HEADER] = |
24 | NLA_POLICY_NESTED(ethnl_header_policy), | |
b7eeefe7 MK |
25 | }; |
26 | ||
27 | static int eee_prepare_data(const struct ethnl_req_info *req_base, | |
28 | struct ethnl_reply_data *reply_base, | |
29 | struct genl_info *info) | |
30 | { | |
31 | struct eee_reply_data *data = EEE_REPDATA(reply_base); | |
32 | struct net_device *dev = reply_base->dev; | |
33 | int ret; | |
34 | ||
35 | if (!dev->ethtool_ops->get_eee) | |
36 | return -EOPNOTSUPP; | |
37 | ret = ethnl_ops_begin(dev); | |
38 | if (ret < 0) | |
39 | return ret; | |
40 | ret = dev->ethtool_ops->get_eee(dev, &data->eee); | |
41 | ethnl_ops_complete(dev); | |
42 | ||
43 | return ret; | |
44 | } | |
45 | ||
46 | static int eee_reply_size(const struct ethnl_req_info *req_base, | |
47 | const struct ethnl_reply_data *reply_base) | |
48 | { | |
49 | bool compact = req_base->flags & ETHTOOL_FLAG_COMPACT_BITSETS; | |
50 | const struct eee_reply_data *data = EEE_REPDATA(reply_base); | |
51 | const struct ethtool_eee *eee = &data->eee; | |
52 | int len = 0; | |
53 | int ret; | |
54 | ||
55 | BUILD_BUG_ON(sizeof(eee->advertised) * BITS_PER_BYTE != | |
56 | EEE_MODES_COUNT); | |
57 | BUILD_BUG_ON(sizeof(eee->lp_advertised) * BITS_PER_BYTE != | |
58 | EEE_MODES_COUNT); | |
59 | ||
60 | /* MODES_OURS */ | |
61 | ret = ethnl_bitset32_size(&eee->advertised, &eee->supported, | |
62 | EEE_MODES_COUNT, link_mode_names, compact); | |
63 | if (ret < 0) | |
64 | return ret; | |
65 | len += ret; | |
66 | /* MODES_PEERS */ | |
67 | ret = ethnl_bitset32_size(&eee->lp_advertised, NULL, | |
68 | EEE_MODES_COUNT, link_mode_names, compact); | |
69 | if (ret < 0) | |
70 | return ret; | |
71 | len += ret; | |
72 | ||
73 | len += nla_total_size(sizeof(u8)) + /* _EEE_ACTIVE */ | |
74 | nla_total_size(sizeof(u8)) + /* _EEE_ENABLED */ | |
75 | nla_total_size(sizeof(u8)) + /* _EEE_TX_LPI_ENABLED */ | |
76 | nla_total_size(sizeof(u32)); /* _EEE_TX_LPI_TIMER */ | |
77 | ||
78 | return len; | |
79 | } | |
80 | ||
81 | static int eee_fill_reply(struct sk_buff *skb, | |
82 | const struct ethnl_req_info *req_base, | |
83 | const struct ethnl_reply_data *reply_base) | |
84 | { | |
85 | bool compact = req_base->flags & ETHTOOL_FLAG_COMPACT_BITSETS; | |
86 | const struct eee_reply_data *data = EEE_REPDATA(reply_base); | |
87 | const struct ethtool_eee *eee = &data->eee; | |
88 | int ret; | |
89 | ||
90 | ret = ethnl_put_bitset32(skb, ETHTOOL_A_EEE_MODES_OURS, | |
91 | &eee->advertised, &eee->supported, | |
92 | EEE_MODES_COUNT, link_mode_names, compact); | |
93 | if (ret < 0) | |
94 | return ret; | |
95 | ret = ethnl_put_bitset32(skb, ETHTOOL_A_EEE_MODES_PEER, | |
96 | &eee->lp_advertised, NULL, EEE_MODES_COUNT, | |
97 | link_mode_names, compact); | |
98 | if (ret < 0) | |
99 | return ret; | |
100 | ||
101 | if (nla_put_u8(skb, ETHTOOL_A_EEE_ACTIVE, !!eee->eee_active) || | |
102 | nla_put_u8(skb, ETHTOOL_A_EEE_ENABLED, !!eee->eee_enabled) || | |
103 | nla_put_u8(skb, ETHTOOL_A_EEE_TX_LPI_ENABLED, | |
104 | !!eee->tx_lpi_enabled) || | |
105 | nla_put_u32(skb, ETHTOOL_A_EEE_TX_LPI_TIMER, eee->tx_lpi_timer)) | |
106 | return -EMSGSIZE; | |
107 | ||
108 | return 0; | |
109 | } | |
110 | ||
111 | const struct ethnl_request_ops ethnl_eee_request_ops = { | |
112 | .request_cmd = ETHTOOL_MSG_EEE_GET, | |
113 | .reply_cmd = ETHTOOL_MSG_EEE_GET_REPLY, | |
114 | .hdr_attr = ETHTOOL_A_EEE_HEADER, | |
b7eeefe7 MK |
115 | .req_info_size = sizeof(struct eee_req_info), |
116 | .reply_data_size = sizeof(struct eee_reply_data), | |
b7eeefe7 MK |
117 | |
118 | .prepare_data = eee_prepare_data, | |
119 | .reply_size = eee_reply_size, | |
120 | .fill_reply = eee_fill_reply, | |
121 | }; | |
fd77be7b MK |
122 | |
123 | /* EEE_SET */ | |
124 | ||
ff419afa | 125 | const struct nla_policy ethnl_eee_set_policy[] = { |
329d9c33 JK |
126 | [ETHTOOL_A_EEE_HEADER] = |
127 | NLA_POLICY_NESTED(ethnl_header_policy), | |
fd77be7b | 128 | [ETHTOOL_A_EEE_MODES_OURS] = { .type = NLA_NESTED }, |
fd77be7b MK |
129 | [ETHTOOL_A_EEE_ENABLED] = { .type = NLA_U8 }, |
130 | [ETHTOOL_A_EEE_TX_LPI_ENABLED] = { .type = NLA_U8 }, | |
131 | [ETHTOOL_A_EEE_TX_LPI_TIMER] = { .type = NLA_U32 }, | |
132 | }; | |
133 | ||
134 | int ethnl_set_eee(struct sk_buff *skb, struct genl_info *info) | |
135 | { | |
fd77be7b | 136 | struct ethnl_req_info req_info = {}; |
5028588b | 137 | struct nlattr **tb = info->attrs; |
fd77be7b | 138 | const struct ethtool_ops *ops; |
5028588b | 139 | struct ethtool_eee eee = {}; |
fd77be7b MK |
140 | struct net_device *dev; |
141 | bool mod = false; | |
142 | int ret; | |
143 | ||
fd77be7b MK |
144 | ret = ethnl_parse_header_dev_get(&req_info, |
145 | tb[ETHTOOL_A_EEE_HEADER], | |
146 | genl_info_net(info), info->extack, | |
147 | true); | |
148 | if (ret < 0) | |
149 | return ret; | |
150 | dev = req_info.dev; | |
151 | ops = dev->ethtool_ops; | |
152 | ret = -EOPNOTSUPP; | |
153 | if (!ops->get_eee || !ops->set_eee) | |
154 | goto out_dev; | |
155 | ||
156 | rtnl_lock(); | |
157 | ret = ethnl_ops_begin(dev); | |
158 | if (ret < 0) | |
159 | goto out_rtnl; | |
160 | ret = ops->get_eee(dev, &eee); | |
161 | if (ret < 0) | |
162 | goto out_ops; | |
163 | ||
164 | ret = ethnl_update_bitset32(&eee.advertised, EEE_MODES_COUNT, | |
165 | tb[ETHTOOL_A_EEE_MODES_OURS], | |
166 | link_mode_names, info->extack, &mod); | |
167 | if (ret < 0) | |
168 | goto out_ops; | |
169 | ethnl_update_bool32(&eee.eee_enabled, tb[ETHTOOL_A_EEE_ENABLED], &mod); | |
170 | ethnl_update_bool32(&eee.tx_lpi_enabled, | |
171 | tb[ETHTOOL_A_EEE_TX_LPI_ENABLED], &mod); | |
63cf3238 WVK |
172 | ethnl_update_u32(&eee.tx_lpi_timer, tb[ETHTOOL_A_EEE_TX_LPI_TIMER], |
173 | &mod); | |
fd77be7b MK |
174 | ret = 0; |
175 | if (!mod) | |
176 | goto out_ops; | |
177 | ||
178 | ret = dev->ethtool_ops->set_eee(dev, &eee); | |
6c5bc8fe MK |
179 | if (ret < 0) |
180 | goto out_ops; | |
181 | ethtool_notify(dev, ETHTOOL_MSG_EEE_NTF, NULL); | |
fd77be7b MK |
182 | |
183 | out_ops: | |
184 | ethnl_ops_complete(dev); | |
185 | out_rtnl: | |
186 | rtnl_unlock(); | |
187 | out_dev: | |
188 | dev_put(dev); | |
189 | return ret; | |
190 | } |